Brake-shoe mold



Feb. 19, 1924.` 1,484,431

J. S. THOMPSON BRAKE sHoE MOLD Filed July zo. 1925 Patented Feb. 19, 1924.

apparent as the detail description progresses lUNITED ySTATES PATENT OFFICE.

JAMES S. THOMPSON, OF PELHAM, NEW YORK.

.Bmixnsrron MOLD.

Application filed `l'uly 20,

To all whom t may conce/fnl:

Be it known that I, JAMES S. THOMPSON, a citizen of the United States, residing at Pelham, in. the county of Westchester and State of New York, have invented certain new and useful Improvements in Brake- Shoe Molds, of which the following .is a specification.

This invention relates to the manufacture of brake shoes, and more particularly to the mold in which the shoe is cast, and its object is broadly to provide a permanent mold in which a brake shoe may be cast fully as well as it can be cast in a sand mold, and r with accompanying reductions in time and cost.

A further object of my invention is to provide a permanent mold which can be easily and quickly opened and closed'to-permit the operator to quickly insert the rein-y forcing part or parts which are to be embedded in the shoe casting, and to facilitate removal of the shoe.

A still further object of my invention is to arovide ametal mold of the character described, having means for protecting all or certain parts of the shoe from the chilling effect which would result by contact of the hot metal withthe metal walls of the mold cavity.

@ther objects of my invention will become- 3 reference being had to the accompanying drawing which illustrates a selected embodi ment of the invention, and wherein- Fig. 1 is a central transverse section through a .metal mold embodying the novel features of my invention.

Fig. 2 is a longitudinal section taken on line 2-2 of Fig. 1, and

Fig. 3 is a horizontal section taken on line 3-3 0f Fig. 2.

In .the drawing I have shown a metal mold comprising a drag member 10, two cope members 11 and 12 having a mold cavity 13 therein, and a relatively fixed frame 14. The drag member 10 is provided with outstanding side lugs 15 which are pivotally connected by means of a pivoting bar 16 to the relatively fixed frame 14. In a like manner, the cope member 11 is provided with outstanding side lugs 17 which are pivotally connected by the pivoting bar 16 to the relatively fixed frame. The cope member 12 has outstanding side lugs 18 which are pivotally connected by a pivoting bar 19 to 1923. Serial No. 652,779.

the frame. It will be readily understood that the drag member 10 and the cope members 11 and 12 may be swung into positions indicated by dotted lines in Fig.. 1. To hold the drag member 10 in its closed position, I have provided it with side lugs 2O which are adapted to engage the pivoting bar 19 and which may be secured thereto by means of locking pins 21. The two cope members are held in closed position by clamps 22, the clamps 22 being pivotally secured to the cope member 11 and having threaded posts 23 adapted to engage the cope member 12.

The relatively fixed frame 14. may be supported by any suitable means. In the drawing I have shown the frame 14 as comprising a plurality of integral legs 24 adapted to support the frame upon a table or the like, it being understood that the table or the like would be adapted to permit the drag member 10 to swing downward into its open position.

Each of the cope members 11 and 12 has a part of the mold cavity 13 formed therein, the partingline between the cope members extending longitudinally of the mold and substantially central of the mold cavity. This construction enables the mold to be quickly and easily opened and closed and it also enables the parts which are embedded in the shoe casting to beY arranged in the mold and held therein in proper positions. The cope members may be closed without in jury te and without disarranging the parts to be embedded in the shoe casting, and they may be opened for the removal of the shoe casting without damage to any parts of the mold.

I have designated by the reference characters 26 and 2'?, respectively, a steel attaching lug and the steel reinforcing back such as are usually embedded in the' shoe casting. The reference character 28 designates a sand core for forming the opening in the attaching lug. In will be noted that the sand core 28 serves to hold the steel attaching lug 26 and the steel reinforcing back 27 in an assembled condition; therefore, the several parts, the attaching lug 26, the reinforcing baclr 27 and the sand core 28 may be inserted in the mold cavity as a unit and a plurality of wire ties 29 maybe employed to hold them in proper positions in the mold cavity. In the preferred embodiment of my invention I provide a sand plug 30 which is recessed at 31 to receive the attaching lug 26 and the send core 28. The Wire ties 29 are suspended from a ber which rests upon aeonteiner or holder 33 in which the send plug 8O is made. The cope members ll sind l2 are provided with :an opening 34 adapted to Vreceive the holder 33.

When preparing the mold for the Cesting operation, the operator First Closes the Cope members ll and l2 and seenres them h1 their .Closed positions. ey eieehe. et the ele-.mes The holder 331 containing the eeed'phie' 3Q end hey-the; the Wire triee 29 embedded therein ie thee1 heetted inte the opening 3e formed iii the ooe-e members. The reinforcingunit then properlv po.- .St-eeed in the mold eevty eed See-i "ed in place by twisting the ends ojtf the wire ties 29, after which the oper-eter need onli7 bring `and secure the drag member 1.0 to and in its eleeed position to have the mold .reedy for the oeetine' operetoh- I have provided the mold With refrzietory sections of improved 'form Whih ere adept.

ed to hold the brake shoe to be enst in the mold free from the chilling elfe-ct which would result by Contact of the hot metal with the metal Wells of the mold edvity, The bottom Well of the mold cavity is formed by fr refrzietory section 35 secured in the drag member l0.A E eeh of the cope members 1l and 12 is provided with e refreetoey .eeetee 37 edepted to tone. Portions of the eed Welle, eide Welle., eed. the tor Welle et the .mold eeyityy The Severed 13e- 'heetely `eeetohe and the eend. plee' 30 are eo fermed the-t the het metal eolieed into the mold `cavity does not come' in Contact with e metel. Well.- The ehee eoet in. the meld.y would heye a eiihetehtelly uniform texture throughout its body.. Howe-Ver, the meld een reed-e tey ieroduee ehoe havies ntee'rel YCompo-Site. wearing feee- This. feeelt. een he obtained hy elterihe the deeeh of the refractory eeettoee to. here the het mete-1. Corne h1 eoeteet with. the. metel. et; the. mold ee thet .eertehi port-ieee et the shoe Will be subjected to the chilling effect theree'f- This invention provides e metal mold in which bmlge shoe may, be east fully es Well as it can be east in :t send mold, i-nd in less time.y lt is apparent that the mold een he Closed Without the. exeleee of epe-f eigil skill or any considerable @mount of lefbor. I have indicated a, pouring gate et 3B, the lower eed.- o the murine reefeterhe with en orienter; h1, the Steel beek 27.?.

My invention een be employed for matige hee oeethgs other then bleke eheee. end oeneidee myself entitled to melee ell elieh eheeeee hi the teem, eehetrhetoe eed' rangement. oft perte they he. heeeeeery or desirable iter this Purpose. eed. for Ine-hiet; different kinds, shapes and sizes of brake shoes, Which fairly fall Within the scope ot the 'lbllowing Claims.

I claim- 1. A permanent mold for making Castings, comprising a frame, a drag pivotally mount.- ed on the frame, und e tivo-.member cope, each of said cope members being pivotally mounted. oh. the freine Y 2. A permanent mold for marking eastings, comprising e freine, a. ding pivotally mounted on the freine end. e two-member Cope7 eeeh of seid cope members being pivotzilly mounted on the frame and having n pent of the meld cavity therein.l

3. A permanent mold for melting cestings, Comprising i frame, e. drag pivotelly mounted on the frame, and a tivo-member Cere, eeeh of Seid. eene memhei'e hehe' hide pehdeetly ievoted upon the heme eed hevine' e Pett. of the mold eeyity therein et. A permanent mold for making eastngs, eelhplieng freine, deeg pivotelly mounted on the treme., e tivoememlfiee eene., eeeh oft Seid ooiee mehihere heine pivote-Hy mounted on the frame and having a part of the nel@ wie therein, we. a eed plug seated in an opening Vformed in said Cope members.-l

5. A refinement mold. for melting eeetf ings, comprising e freine, a drag; pivotsilly mounted on the freine, a two-member oops, each of said cope members being pivotgrlly mounted on the freine and heyihe e Peet of the mold eeyty therein, .e Seed plug, eed .meerde embedded ih .the Seed plee for eeeeehdee ih the mold. eevity the perte. Wheh ere to be embedded. ih the eeeteee 6. A. ieetel meld for cesti-ee' e broke shoe, comprisinga frame, a drag mounted oh the. treme, e. tweetemher eope, eeeh o' Seid. cope. heine pivotelly meuhted eh the freine eed heringe loert. oi? the meld eevty thelseih, eend plug Seo-ted h1. the eeiee h e of theiehoe, eed meehe eXtehdihe 'theeeeh the eend ehretelf eupeortee ie the. meld. eevty the parte which are to be embedded in the nesting.

7. e. ieeeiiieeeht meld tor ihekhe eeetings7 comprising e trame1 i drag pivotelly mounted oh the heele., e twg-member @ope hevhe' ee opening extending therethrough, pfeift of the opening being formed in one of .Seid oop-e memhere another peet ofthe @Peeing beine* :termed in the etheh seid Cope members, eeeh of .Seid cope. members heine'- evotelly mehhted on the frame, e Seed plee eeeted-Il ...id opening, and. means. eereed by the eend Phletoe support-hie ih. the hield eevty the perte Wheh. ere te he embedded ie the eeethiee.. A permanent mold telf mekne @eet-4 inge', eompreies e. deeg eed e twoememher cope havinga mold Cavitytherein, seid ioyotelly e cope members being movable independently and relatively to the drag, said cope having an opening therein formed partly in one member and partly in the other, a sand plug in said opening, and means embedded in said sand plug for suspending in the cavity the parts to be embedded in the casting.

9. A permanent mold for making castings, comprising a drag and a two-member cope having a mold cavity therein, said eope members being lmovable independently and relatively to the drag, said cope having an opening therein formed partly in one member and partly in the other, a sand plug in said opening, and means extending through said sand plug lor suspending in the mold cavity the parts to be embedded in the casting. Y

10. A permanent mold for making eastings, Comprising a drag and a two-member Cope lia-ving a mold cavity therein, said cope members being movable independently and relatively to the drag, said Cope having an opening therein formed partly in one member and partly in the other, a sand plug in said opening, and means carried by said sand plug for supporting in the cavity the parts to be embedded in the'casting.

1l. A permanent mold for making castings, comprising a frame, a drag pivotally mounted on the frame, a two-member cope, said Cope members being movable independently and relatively to the drag, said Cope having an opening therein formed partly in one member and partly in the other, a sand plug in said opening, and means carried b-y said sand plug for supporting in the mold cavity the parts to be embedded in the casting.

12. A permanent mold for making castings, comprising a frame having an opening therein, a cope, a dragpivotally mounted on the frame at one side of said opening to swing into operative position in said opening, and means for securing the drag in operative position.

13. A permanent mold for making eastings, Comprising a frame having an opening therein, a two-member cope, each of said cope members being pivotally mounted' on the frame and adapted to abut in operative position and to be supported and rest upon the frame in open position, a drag pivotally mounted on the frame and adapted to be swung up in said opening in abutting relation to the cope members, and means for holding said drag in abutting position.

JAMES S. THOMPSON. 

